// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System.Collections.Generic;
using System.Linq;
using Xunit;

namespace Microsoft.AspNetCore.Authentication
{
    public class TokenExtensionTests
    {
        [Fact]
        public void CanStoreMultipleTokens()
        {
            var props = new AuthenticationProperties();
            var tokens = new List<AuthenticationToken>();
            var tok1 = new AuthenticationToken { Name = "One", Value = "1" };
            var tok2 = new AuthenticationToken { Name = "Two", Value = "2" };
            var tok3 = new AuthenticationToken { Name = "Three", Value = "3" };
            tokens.Add(tok1);
            tokens.Add(tok2);
            tokens.Add(tok3);
            props.StoreTokens(tokens);

            Assert.Equal("1", props.GetTokenValue("One"));
            Assert.Equal("2", props.GetTokenValue("Two"));
            Assert.Equal("3", props.GetTokenValue("Three"));
            Assert.Equal(3, props.GetTokens().Count());
        }

        [Fact]
        public void SubsequentStoreTokenDeletesPreviousTokens()
        {
            var props = new AuthenticationProperties();
            var tokens = new List<AuthenticationToken>();
            var tok1 = new AuthenticationToken { Name = "One", Value = "1" };
            var tok2 = new AuthenticationToken { Name = "Two", Value = "2" };
            var tok3 = new AuthenticationToken { Name = "Three", Value = "3" };
            tokens.Add(tok1);
            tokens.Add(tok2);
            tokens.Add(tok3);

            props.StoreTokens(tokens);

            props.StoreTokens(new[] { new AuthenticationToken { Name = "Zero", Value = "0" } });

            Assert.Equal("0", props.GetTokenValue("Zero"));
            Assert.Null(props.GetTokenValue("One"));
            Assert.Null(props.GetTokenValue("Two"));
            Assert.Null(props.GetTokenValue("Three"));
            Assert.Single(props.GetTokens());
        }

        [Fact]
        public void CanUpdateTokens()
        {
            var props = new AuthenticationProperties();
            var tokens = new List<AuthenticationToken>();
            var tok1 = new AuthenticationToken { Name = "One", Value = "1" };
            var tok2 = new AuthenticationToken { Name = "Two", Value = "2" };
            var tok3 = new AuthenticationToken { Name = "Three", Value = "3" };
            tokens.Add(tok1);
            tokens.Add(tok2);
            tokens.Add(tok3);
            props.StoreTokens(tokens);

            tok1.Value = ".1";
            tok2.Value = ".2";
            tok3.Value = ".3";
            props.StoreTokens(tokens);

            Assert.Equal(".1", props.GetTokenValue("One"));
            Assert.Equal(".2", props.GetTokenValue("Two"));
            Assert.Equal(".3", props.GetTokenValue("Three"));
            Assert.Equal(3, props.GetTokens().Count());
        }

        [Fact]
        public void CanUpdateTokenValues()
        {
            var props = new AuthenticationProperties();
            var tokens = new List<AuthenticationToken>();
            var tok1 = new AuthenticationToken { Name = "One", Value = "1" };
            var tok2 = new AuthenticationToken { Name = "Two", Value = "2" };
            var tok3 = new AuthenticationToken { Name = "Three", Value = "3" };
            tokens.Add(tok1);
            tokens.Add(tok2);
            tokens.Add(tok3);
            props.StoreTokens(tokens);

            Assert.True(props.UpdateTokenValue("One", ".11"));
            Assert.True(props.UpdateTokenValue("Two", ".22"));
            Assert.True(props.UpdateTokenValue("Three", ".33"));

            Assert.Equal(".11", props.GetTokenValue("One"));
            Assert.Equal(".22", props.GetTokenValue("Two"));
            Assert.Equal(".33", props.GetTokenValue("Three"));
            Assert.Equal(3, props.GetTokens().Count());
        }

        [Fact]
        public void UpdateTokenValueReturnsFalseForUnknownToken()
        {
            var props = new AuthenticationProperties();
            var tokens = new List<AuthenticationToken>();
            var tok1 = new AuthenticationToken { Name = "One", Value = "1" };
            var tok2 = new AuthenticationToken { Name = "Two", Value = "2" };
            var tok3 = new AuthenticationToken { Name = "Three", Value = "3" };
            tokens.Add(tok1);
            tokens.Add(tok2);
            tokens.Add(tok3);
            props.StoreTokens(tokens);

            Assert.False(props.UpdateTokenValue("ONE", ".11"));
            Assert.False(props.UpdateTokenValue("Jigglypuff", ".11"));

            Assert.Null(props.GetTokenValue("ONE"));
            Assert.Null(props.GetTokenValue("Jigglypuff"));
            Assert.Equal(3, props.GetTokens().Count());

        }

        //public class TestAuthHandler : IAuthenticationHandler
        //{
        //    private readonly AuthenticationProperties _props;
        //    public TestAuthHandler(AuthenticationProperties props)
        //    {
        //        _props = props;
        //    }

        //    public Task AuthenticateAsync(AuthenticateContext context)
        //    {
        //        context.Authenticated(new ClaimsPrincipal(), _props.Items, new Dictionary<string, object>());
        //        return Task.FromResult(0);
        //    }

        //    public Task ChallengeAsync(AuthenticationProperties properties)
        //    {
        //        throw new NotImplementedException();
        //    }

        //    public void GetDescriptions(DescribeSchemesContext context)
        //    {
        //        throw new NotImplementedException();
        //    }

        //    public Task SignInAsync(ClaimsPrincipal principal, AuthenticationProperties properties)
        //    {
        //        throw new NotImplementedException();
        //    }

        //    public Task SignOutAsync(AuthenticationProperties properties)
        //    {
        //        throw new NotImplementedException();
        //    }
        //}

        //[Fact]
        //public async Task CanGetTokenFromContext()
        //{
        //    var props = new AuthenticationProperties();
        //    var tokens = new List<AuthenticationToken>();
        //    var tok1 = new AuthenticationToken { Name = "One", Value = "1" };
        //    var tok2 = new AuthenticationToken { Name = "Two", Value = "2" };
        //    var tok3 = new AuthenticationToken { Name = "Three", Value = "3" };
        //    tokens.Add(tok1);
        //    tokens.Add(tok2);
        //    tokens.Add(tok3);
        //    props.StoreTokens(tokens);

        //    var context = new DefaultHttpContext();
        //    var handler = new TestAuthHandler(props);
        //    context.Features.Set<IHttpAuthenticationFeature>(new HttpAuthenticationFeature() { Handler = handler });

        //    Assert.Equal("1", await context.GetTokenAsync("One"));
        //    Assert.Equal("2", await context.GetTokenAsync("Two"));
        //    Assert.Equal("3", await context.GetTokenAsync("Three"));
        //}

    }
}
